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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2015 Synopsys, Inc. (www.synopsys.com)
*/
#ifndef _ASM_HIGHMEM_H
#define _ASM_HIGHMEM_H
#ifdef CONFIG_HIGHMEM
#include <uapi/asm/page.h>
#include <asm/kmap_size.h>
#define FIXMAP_SIZE PGDIR_SIZE
#define PKMAP_SIZE PGDIR_SIZE
/* start after vmalloc area */
#define FIXMAP_BASE (PAGE_OFFSET - FIXMAP_SIZE - PKMAP_SIZE)
#define FIX_KMAP_SLOTS (KM_MAX_IDX * NR_CPUS)
#define FIX_KMAP_BEGIN (0UL)
#define FIX_KMAP_END ((FIX_KMAP_BEGIN + FIX_KMAP_SLOTS) - 1)
#define FIXADDR_TOP (FIXMAP_BASE + (FIX_KMAP_END << PAGE_SHIFT))
/*
* This should be converted to the asm-generic version, but of course this
* is needlessly different from all other architectures. Sigh - tglx
*/
#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
#define __virt_to_fix(x) (((FIXADDR_TOP - ((x) & PAGE_MASK))) >> PAGE_SHIFT)
/* start after fixmap area */
#define PKMAP_BASE (FIXMAP_BASE + FIXMAP_SIZE)
#define LAST_PKMAP (PKMAP_SIZE >> PAGE_SHIFT)
#define LAST_PKMAP_MASK (LAST_PKMAP - 1)
#define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT))
#define PKMAP_NR(virt) (((virt) - PKMAP_BASE) >> PAGE_SHIFT)
#include <asm/cacheflush.h>
extern void kmap_init(void);
#define arch_kmap_local_post_unmap(vaddr) \
local_flush_tlb_kernel_range(vaddr, vaddr + PAGE_SIZE)
static inline void flush_cache_kmaps(void)
{
flush_cache_all();
}
#endif
#endif